package System; public class String extends Object { public java.lang.String value; public String(java.lang.String value) { this.value = value; } public String ToString() { return this; } public int get_Length() { return value.length(); } static public String Concat(String s1, String s2) { return new String(s1.value + s2.value); } static public String Concat(String s1, String s2, String s3) { return new String(s1.value + s2.value + s3.value); } static public boolean op_Equality(java.lang.String s1, java.lang.String s2) { return s1.equals(s2); } static public boolean op_Equality(String s1, String s2) { return s1.value.equals(s2.value); } }